userdata.py

#!/usr/bin/env python

import re
import sys
import urllib2
from datetime import datetime

print "# Generated by %s at %s" % (sys.argv[0], datetime.now())
print

USER_DATA_URL = "http://169.254.169.254/latest/user-data"
res = urllib2.urlopen(USER_DATA_URL)

for line in res.readlines():
    key, val = re.split(r'\s*=\s*', line.strip(), 1)
    print 'export %s="%s"' % (key.upper(), val)